text: #ifndef PHY_ELEMENT_TRUSS__H
  #define PHY_ELEMENT_TRUSS__H
  
  #include "PhyElement.h"
  #include "LAFuncs.h"
  
  class PhyMaterial;
  
  class PhyElementTruss : public PhyElement
  {
  public:
  	virtual void setInternalMaterialProperties(PhyMaterial* pMat);
  	virtual void Calculate_ElementStiffness_Force();
  
  	virtual void SpecificOutput(ostream& out) const;
  
  	double L;
  	double A;
  	double E;
  	double c;
  	double s;
  //private:
  	virtual void setGeometry();
  };
  
  #endif